120 citations · 212 across the 21 of their papers we have counts for
21 papers
Training-Free Energy Beamforming Assisted by Wireless Sensing
Li Zhang, Yuan Fang, Zixiang Ren +2
This paper studies the transmit energy beamforming in a multi-antenna wireless power transfer (WPT) system, in which an access point (AP) equipped with a uniform linear array (ULA)…
Fundamental CRB-Rate Tradeoff in Multi-Antenna ISAC Systems with Information Multicasting and Multi-Target Sensing
Zixiang Ren, Yunfei Peng, Xianxin Song +5
This paper investigates the performance tradeoff for a multi-antenna integrated sensing and communication (ISAC) system with simultaneous information multicasting and multi-target…
Robust Transmit Beamforming for Secure Integrated Sensing and Communication
Zixiang Ren, Ling Qiu, Jie Xu +1
This paper studies a downlink secure integrated sensing and communication (ISAC) system, in which a multi-antenna base station (BS) transmits confidential messages to a single-ante…
Fundamental CRB-Rate Tradeoff in Multi-antenna Multicast Channel with ISAC
Zixiang Ren, Xianxin Song, Yuan Fang +2
This paper studies the multi-antenna multicast channel with integrated sensing and communication (ISAC), in which a multi-antenna base station (BS) sends common messages to a set o…
Optimal Transmit Beamforming for Secrecy Integrated Sensing and Communication
Zixiang Ren, Ling Qiu, Jie Xu
This paper studies a secrecy integrated sensing and communication (ISAC) system, in which a multi-antenna base station (BS) aims to send confidential messages to a single-antenna c…
Throughput Analysis of UAV-assisted CellularNetworks by Matérn Hardcore Point Process
Mengbing Liu, Guangji Chen, Ling Qiu
Unmanned aerial vehicles (UAVs) are expected to coexist with conventional terrestrial cellular networks and become an important component to support high rate transmissions. This p…
Analysis and Optimization of Random Cache in Multi-Antenna HetNets with Interference Nulling
Kangda Zhi, Guangji Chen, Ling Qiu +2
From the perspective of statistical performance, this paper presents a framework for the per-user throughput analysis in random cache based multi-antenna heterogeneous networks (He…
Online Maneuver Design for UAV-Enabled NOMA Systems via Reinforcement Learning
Yuwei Huang, Xiaopeng Mo, Jie Xu +2
This paper considers an unmanned aerial vehicle enabled-up link non-orthogonal multiple-access system, where multiple mobile users on the ground send independent messages to a unma…
Cognitive UAV Communication via Joint Maneuver and Power Control
Yuwei Huang, Weidong Mei, Jie Xu +2
This paper investigates a new scenario of spectrum sharing between unmanned aerial vehicle (UAV) and terrestrial wireless communication, in which a cognitive/secondary UAV transmit…
UAV-Enabled Wireless Power Transfer with Directional Antenna: A Two-User Case
Yundi Wu, Jie Xu, Ling Qiu
This paper considers an unmanned aerial vehicle (UAV)-enabled wireless power transfer (WPT) system, in which a UAV equipped with a directional antenna is dispatched to deliver wire…
Cognitive UAV Communication via Joint Trajectory and Power Control
Yuwei Huang, Jie Xu, Ling Qiu +1
This paper investigates a new spectrum sharing scenario between unmanned aerial vehicle (UAV) and terrestrial wireless communication systems. We consider that a cognitive/secondary…
Capacity of UAV-Enabled Multicast Channel: Joint Trajectory Design and Power Allocation
Yundi Wu, Jie Xu, Ling Qiu +1
This paper studies an unmanned aerial vehicle (UAV)-enabled multicast channel, in which a UAV serves as a mobile transmitter to deliver common information to a set of ground us…
Stochastic Geometry Analysis of Multi-Antenna Two-Tier Cellular Networks
Zheng Chen, Ling Qiu, Xiaowen Liang
In this paper, we study the key properties of multi-antenna two-tier networks under different system configurations. Based on stochastic geometry, we derive the expressions and app…
Area Spectral Efficiency Analysis and Energy Consumption Minimization in Multi-Antenna Poisson Distributed Networks
Zheng Chen, Ling Qiu, Xiaowen Liang
This paper aims at answering two fundamental questions: how area spectral efficiency (ASE) behaves with different system parameters; how to design an energy-efficient network. Base…
Analysis and Optimization of Cellular Network with Burst Traffic
Zheng Chen, Ling Qiu
In this paper, we analyze the performance of cellular networks and study the optimal base station (BS) density to reduce the network power consumption. In contrast to previous work…
Energy Efficient Coordinated Beamforming for Multi-cell MISO Systems
Yi Huang, Jie Xu, Ling Qiu
In this paper, we investigate the optimal energy efficient coordinated beamforming in multi-cell multiple-input single-output (MISO) systems with multiple-antenna base stations…
An Energy Efficient Semi-static Power Control and Link Adaptation Scheme in UMTS HSDPA
Yi Huang, Jie Xu, Ling Qiu
High speed downlink packet access (HSDPA) has been successfully applied in commercial systems and improves user experience significantly. However, it incurs substantial energy cons…
Energy Efficiency Optimization for MIMO Broadcast Channels
Jie Xu, Ling Qiu
Characterizing the fundamental energy efficiency (EE) limits of MIMO broadcast channels (BC) is significant for the development of green wireless communications. We address the EE…
Energy Efficiency Scaling Law for MIMO Broadcasting Channels
Jie Xu, Ling Qiu
This letter investigates the energy efficiency (EE) scaling law for the broadcasting channels (BC) with many users, in which the non-ideal transmit independent power consumption is…
Energy Efficient Iterative Waterfilling for the MIMO Broadcasting Channels
Jie Xu, Ling Qiu, Shunqing Zhang
Optimizing energy efficiency (EE) for the MIMO broadcasting channels (BC) is considered in this paper, where a practical power model is taken into account. Although the EE of the M…
Improving Energy Efficiency Through Multimode Transmission in the Downlink MIMO Systems
Jie Xu, Ling Qiu, Chengwen Yu
Adaptively adjusting system parameters including bandwidth, transmit power and mode to maximize the "Bits per-Joule" energy efficiency (BPJ-EE) in the downlink MIMO systems with im…